in transformers for ex. 100mva and 400kv the secondary current is about 420 amps but for selection of bushing the capacity of selected bushing is 2000A why there is such big difference ?
ABB,
2 4009how can we make cable shedule for controll wiring ? which details must be required for it.?
L&T,
1630what difference between tapping -15% to +5 % and -5% to +15% tap. & how can define HV turns on maximun & minimum tap of power transformer.
2 3767what is the difference between "Rotary bypass isolation switch and Normal bypass switch" pls share indepth techs?
1609Can anyone provide with a SLD for HT panel installation for a 33KV line and distribution end has three 1.5MV transformers. Is it suitable to use OCB or VCB and also provide me the suitable rating and its connection diagram.
TATA,
2879Post New Electrical Engineering Questions
Can you explain about Restricited earth fault protection scheme
What is the RMS and DFT principle of analogue maesurments. Which way they are advangages. where which princples give optimum results.
Distribution transformer we provided 2 separate earthing pit for Body and 2 separate earthing pit for neutral,we can not connect separate body earthing pit to other earthing pit but we do metal glanding in secondary side cable termination in both side, transformer and PCC panel (LT Panel), is this safe for transformer and other equipment?
how the testing of protection CT Testing done through Primary injection kit please describe in detail procedure...
what is p.s impedance measurement test in earthing transformer?
What are the advantages of a three-phase system over a single-phase system?
1 “earthing” for bonding of equipment and circuits to common plant earth electrode potential, 2 “protective earthing (PE)” when this bonding is required for personal safety provisions 3 “grounding” for interference suppressing bonding of screens, sys-tems with ground level 4. low-impedance earthing ? 5.primary earthing system and secondary earthing system what is that? 6.earthing electrode or mesh net earthing electrode ? very confusing , simple but very informative help required ? i will be very very thankful to you guys.
why we are using Load factor?
What are the criteria shall be considers for sizing Fuse and MCB? If the rated current is 10Amps what should be the fuse size / MCB Size?
what happens if earth of 33kv cable is not connected to earthing pits? please send this query's answer to ngrm.sudha249@gmail.com
IF 8255 CONTROL WORD IS 94H,Tell the chip port work mode ?
xpression 'document.FrmQF.myemail' [
1.25 kg of hydrogen are burnt with stiochiometric air, the mass of air in kg required is
What is the rating of a circuit breaker needed for 300 kv load in 33KV supply line of 33/415 transformer ? Whether 800/1200 amp vaccum circuit breaker can perform for a 33 KV line in input in 415 volt in output of the transformer ?
Dear sirs, pls check this 4-20ma to RS485 module datasheet,pls guve me some suggestions. http://www.szsunyuan.com/sy/pro_more.asp?Productid=539 Thanks. E-mail:yunianjiang99@gmail.com
